Furnace.



M. ZIPPLER', Sn.

PURNAUE. APPLICATION FILED MAB. 12.1909.

942,872. Patented Deo. 7, 1909.

Fgglz. FUI

' :specifically one side of the saine removed.

'UNITED STATES PATENT'- oEEicE.

MICHAEL ZIPPLER, sa., or PITTSBURG, PENNSYLVANIA; MICHAEL zirrLEn, Jn., EXECUTOR or SAID MIGHAEL ZIPPLER, sn., DEGEAS'ED.

FURNACE.

To all whom 'it may concern:

Be it known that I, MICHAEL ZIPPLER, Sr., a residentof Pittsburg, (North Side,) in the county of Allegheny and State of Pennsyl Vania, have invented a new and useful Improvement in Furnaces; and Il do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to furnaces and has special reference to what are known as cupola furnaces.

T hel object of my invention is to provide a cheap, simple and eflicient form of a lining for such furnaces in which a larger amount of air storage. space can be formed therein than is ordinarily provided, and -withoutweakening the furnace or said lining, as well as enabling the furnace to run continuously and give more blast area. Bly inventiony consists, generally stated, in the novel arrangement, construction and combination of parts, as hereinafter more set forth and described and particularly pointed out in the claims.

To enable others skilled in the art to which iiiy invention appertains to construct and use my improved furnace, I will describe the same more fully, referring to the accompanying drawing, in whicli- Figure 1 is a vertical central section of the basel portion of a cupola furnace showing my invention applied thereto. .Fig '2 is a cross-section on the line 2--0 Fig. 1 with Fig. 3 is a detail cross-section on the line 3-3 Fig..1. `Fig. 4 is a section on the line 1-1 Fig. Fig. 5 is a perspective view of vone of the air boxes employed. Figs. 6, 7 and 8 are sectional views showing other forms of my in- 'ention. Fig. 9 is a perspective view of one of the bricks foil forming the metal lining shown in Fig. S. Fig. 10 is a sectional view showing another form of furnace. Fig. 11 is a perspective view of a portion of the Z- shaped .ring or plate employed Like symbols of reference herein indicate like parts in each of the figures of the drawing.

As illustrated in the drawing the general arrangement. andv forni of the furnace is similar to that shown and described in my United States Letters Patent Xo. 871,476, grantedon December 21. 1907. in which the casing 1 incloses the lining 2, and such lining in the ordinary furnaces is generally v Specification of Letters Patent.. Appiicauon inea March 12, isoaf serial No. 483,042.

Patenteanec. 7,A 1909.

formed of fire bricks and of the same general thickness of walls throughout the length or height ofthe furnace. .In such furnaces the casing 1 and lining 2 are built upfrom the bottom plate 3,"which rests upon columns 4 extending downto the ground. or tioor of the lfoundry or mill for supporting said furnace. The bottom plate Bhas the usual opening 5d therein for being closed by the doors 6 hinged at the side of the plate and which form the bottoni or base of the furnace for supporting the material within the saine and for perter the heat, or whenv desired. Adjacent to the plate 3 is the usual tap-hole 7 extending through the casing 1 and lining 2 and is used to draw off the molten metal from the'v furnace.y

built up from the plate 3 for a short clis-A tance and of uniform thickness toform the lower wall portion 8 of said lining and upon the saine and -extending fromv its inner face ring 9 of segmental plates or sections,f as shown in Fig. 1. 4Resting upon the ring 9 are a series of metal blocks 10, which are placed around the same and 'at the`inner edge thereof to form the main horizontal flues or. twyers 11 between vthem. These blocks/10 are provided with the curved inner faces 12 to correspond with the like face on the ring 9, and are also prov-ided with the recesses 13 0n the rear of the same for more'properly distributing the air from the chamber hereinafter described through the twyers 11 to the furnace.

Laid on or secured upon the blocks 10 is the metal ring 17 which is formed of segmental` plates orl sections and preferably Z-sliape in cross-section, as shown `in Fig.

the saine rests -upon said blocks and theupy per horizontal flange 19 thereof extends outward and against the casing l, thereby forming the large vertical air chamber 21 between said flange and casing, the -verticall flangeor body Q0 of said ring, the said blocks and the ring 9. The air supply pipes Q2 lead into the lower end of the chamber 21 through openings Q2 in the casing 1 and opposite the twyers 11. and they connect on the exterior of the furnace with the main blast pipe Q3 lead-ing fioin the usual source of blast supply. The openings 22 connect In the present construction the lining 2 is l rto the casing 1 is secured the lower metaly mitting the withdrawal of said material afl so,y

11, so that the lower horizontal tiange 18 of y with the chamber 21 and theyI arereferabl ofthe salue height as said cham er.

"lesting by their bottom faces on the flange 18 of thering 17 are the metal .bricks or plates v24,'which are tapered on their sides to form a brick or plate of keystone or wedge shape for insertion to form a circular metal lining 2o at'this point. The rear or outer faces 26 of these bricks 24. rest against the body 20 of the ring 17, and the front or tends upward and backward at an incline,

as'at28, and joins the upper wall of the said lining at its upper en such portion and said wall being preferably formed of firebrick and said wall being of the usual thickness of four and one half inches from said portion up to the top of the furnace.

' Extending up from the .air chamber 21 are the auxiliary iues or twyers 30 which pass through the lining 2 and lead into the furnace through theprojecting portion 27" of said lining. These twyers 30 connect with the chamber 21 through openings 19.

in the flange" 19 of the rm 17 and are formed-of metal boxes 31 bullt within the. lining 2 and against the casing 1," such boxes being preferably formed in two sections to 'form the vertical and the substantiallyhorizontalfn and downwardly inclined portions 30 and 30 of said twyers. LThe vboxes 27 are provided ywith the open side 32 for fitting against the casing 1 to form the twyer portion 30 and the twyer portion 30y is also rovided'with the open top 32 for being c osed by a cover or top plate 33 fittingl over the same and held within said portion 30 by the strips or flanges 33 on .said pla,te.V The vertical section 34 of the boxes .3-1 for the twyer portion30 is preferably provided with the projection 35 at the upper end of the same to form a seat36, within which the end of the inclined twyer 'portion 30 of said boxes are adapted to tit and be held in place by pins 37 'passing through the same.

In the operation of my improved furnace the material for melting the metal 1s placed lupon the'doors 6 in the ordinary manner and such material extends up to the top of the lining 2S where the metal to be melted is placed. After the fire has been started in the furnaceand the air blast turned on, such air will pass from the blast p1pe 23 through the pipes 22 and opening `22 into tap hole 7 the doors 6 can beopened and the material left Within the furnace will be free from the lining 2, so that it can be dropped to the ground or floor. 1

If desired, the lining 2 below the metal ring 9 can be provided with a troughvor recessed portion 38. within the same and extending down into the wall 8 of said lining which leads from the furnace to a -box 39 secured on the outside of the casing 1, and such portions act to prevent any overflow of the melted metal within the furnace from enterin the twyers 11 and conduct the same to said x, wherey it will burn out the plug 40 ina hole 40 in the ,bottom of said box and pass through said hole to the ioor or ground, so that .when the bosh`is full of molten metal or slag it can alsov escape in this manner.

In Figs. 6 and 7 the metal ring 9 in forming'the bottom of the vertical air chamber 21 can be made in the :form of Z-shaped segmental plates or sections, as shown at- 41, .in Awhich case the upper horizontal iiange 42 can be placed .between the blocks 10 and wall 8, and the vertical body 43 and lower horizontal iange 44 extend down into said Wall, sothat the end of said lower flange will come against the casing 1 to form the bottom of said chamber and thereby form a larger air chamber 21 for use with low ldown pipes or twyers, as in Figr. In -Fig. 7 such -plate41 can be provided with a lug 45 extendin up from the upper flange 42 in order to orrn an abutment .for the blocks 10 and keep them in place, and incase it is desired to form a smaller air chamber 21 a flat metal ring 17 can be used in placeI of the Z-shaped 17, as shown in said figure', so

that the vertical portions 30 of the twyer,

boxes 30 can b'e lengt'hened to rest-upon' said ring and communicate with the said chamberthrough the openings 19 therein.

In Figs. 8 and 9 the metal bricks or plate-s 24 can be provided with flanges or lugs 24 extending outl from the rear faces of' the sameand at the upper ends thereof for fitting by their-ends against the casing- 1 to x form the upper wall of the -chamber'21, so that in this case the vertical portions 30 of the twyer boxes 30. can rest upon saidv lugs andcommunicate with said chamber through the openings 24" between said lugs. In this form the ring4 17 can be formed of angular' shaped segmental plates or sections, as at 46, s o that one fiange`47 of said ring can be placed between the bricks or plates `24-and .the blocks 10 andthe other flange 48 placed 1n a vertlcal upward line against the rear faces of said bricks. The bricks 24 ih this the furnace, which con'n'nunicates with the l chamber 21 through the openings 22. and

the chamber 19 is formed of a casing 49 having an inclined top 49" leading upwardly against the casing 1, and through said top an air blast pipe 50 leads into said chamber from the usual source of supply.

Various other modifications and changes in the design alid construction of the various parts of`my improved furnace may be resorted to without departing from the spiritof the invention or sacrificing any of its advantages. 4 Y

It will .thus be seen that my improved furnace will enable a continuous air chamber of a large blast area to be formed on the inside of the furnace shell or casing and of a greater vertical de th than the main twyers, so that the reduce( twyers will feed the air therefrom -to the furnace, thereby permitting said air to be compressed as it is fed to the entire furnace, which will make the melting of the metal more uniformand prolong the life -of the ,furnace'lining This arrangement of air chamber and twyers will also prevent what is known as center melting of the metal and forms a continuous How of the air, V,which enables a more imiform and steady lblast pressure to supply all the twyers with a suiiicient amount of air to lmelt the metal freely and without the clogging of the twyers, while at the same time the blast more evenly `distributed and spreading the same over the entire furnace. It will also be seen that my improved furnace will overcome thechanging of the different parts of the lining and connections to the furnace, so that the arrangement of air chamber and twyers can be applied to etting the ordinary approved forni of these fur-- naces, while the construction of the combination plate for such chamber can be made in different shapes and styles, and forms a solid and substantial rest for the overhanging bricks or plates. The plate. for the chamber can be used for the raising or lowering of the auxiliary twyers without interfering with the -furnace shell or casing and will enable the supplying of air to said v twyers through the saine, so that such air enters the furnace p ortion thereof, and as many of such twyers can be used as desired to get the best results. The plate can be made to anyv size through the projecting necessary to deliver an' to the furnace through the main twycrs andcaii be made iii one piece or in segments or sections to suit each and every furnace,.while at the same time it can be clit in the center and at both ends to meet any requirements necessary, or can be made in blank without vcasting for the upright twyerboxes.v The connections for forming the air chamber are strong and durable, are easily set and secured in place and will add very little to the cost of forn'ing the linings in these furnaces.

' What I claim as my invention and desire to secure by Letters Patent is 1. In a furnace, the combination of the wall or lining havingl main twyers within the saine, an air chamber within said lining .and connected to said twyers, said chanibci.- being of greater vertical depth ythan said twyers, and a plate extending from the interior of said lining and forming. the wall of said chamber.

2. In afurnace, the combination ot' the wall or lining having main twyers within the same, an air chamber within said lining and connected to said tiv'vers, said chamber being of greater vertical depth than said twyers, and an angular-shaped plateextending from the interior of said liniim` and forming the wall of said chamber.

3. In a furnace, the combination of the wall or lining having main' twvcrsI within the saine, an air chamber within said lining and connected to said twyers, said chamber being of greater vertical depth than said twyers, and a Z-shaped plate extendingl from the interior portion of said lining and forniing the walls of said chamber.

4. In a furnace, the combination ot the wall or lining having niain tuycrs within the same, an air chamber within said lining and connected to said twyers` said chamber being of greater vertical depth than said twyers. auxiliary twyers leading up from said chamber and into the furnace through said lining, and a Z-shaped plate extending from the interior portion of said lining for forming the walls of said chamber and `for supporting said auxiliary twyers.

5. In a furnace, the combination of the llt) wall or lining having main twyers within the saine, an air chamber within said liningl and connected to said twvers. said chamber being of greater vertical depth than said twyers, and a sectional Z-shaped plate cx-A tending from the interior portion of said lining and forming the walls of said chainber.

6. In a furnace, the combination of a wall or lining having main twyers within the same. an air chamber within said lining and connected to said twyers. said chaniber bcing of greater vertical depth than said twyers, auxiliary tivyers leading vup from said chamber and into the furnace through A lsaid lining, and a sectional Z-shaped plate extending from the interior portion of said `liningvfor forming the walls of said chamthe same, an air chamber Within said lining and connected to said twyers, said air cham ber being of greater vertical depth than said twyers, auxiliary twyers leading upl from said chamber and into the furnace through saidI lining, and a Z-shapecl plate extending from the interior portion of Said lining for forming the Walls of said chamber and for support-.ing s aid auxiliary twyers, said plate 11a-ving openings Within the same for communicating with lsaid auxiliaryv twyers.

.8. In a yfurnace, the combination of the wall Vor lining haring main t-wyers within the same, an air chamber Within said lining and connected to sald tWyeI'S, Said all' Chamnber being of greater V'ertlcal depth than Said twyers, auxiliary tWyers leading up from said chamber and intoth'e furnace through -said lining, and a sectional Z-shaped plate extending from the interior portion of Said lining for forming the Walle of said chamber and for supporting said auxiliary twyer Saidv plate having openings Within the Same for communicating With said auxiliary twyers.

In testimony whereof, I, the said MICHAEL I 

